The term “socialization” means exposing your puppy to a lot of people, places and things, and making sure he has good experiences with them. We have done all we can during their first 8 weeks of life to provide your puppy with those positive experiences but from week 8-15 they will still need lost of exposure.
According to the American Society of Animal Behaviorist
“The primary and most important time for puppy socialization is the first three months of life. During this time puppies should be exposed to as many new people, animals, stimuli, and environments as can be achieved safely without causing over stimulation manifested as excessive fear, withdrawal, or avoidance behavior. For this reason, The American Veterinary Society of Animal Behavior believes that it should be the standard of care for puppies to receive such socialization before they are fully vaccinated. “